Problem!. Users posting with others usernames

[Mupetz]

Hello,

I don't know how can this happen.
Users are posting something and they realize they are on another member account !!
This is quite weird.
Example :
On forum home last post appears made by X
When you view topic it shows made by Y, but the post belongs to X ! ( X made it ! )
How can this be possible ?

Yesterday i installed several mods ( from vb.org )
Including VBSEO

Please reply, this is very urgent.
Thanks

[peterska2]

As this has happened since you installed modifications, please remove the modifications and then reenable them one by one checking between each one. Once you find the one that is causing the problem, please contact the modification author for support,

[Mupetz]

The thing is ... i installed the script 13 jan. Yesterday 14 jan i added the mods and the people begin to register. 13 jan no people to post. So how can i know if its the script or the mods ?
2 Members had this problem since yesterday. Total 27 members ( almost all posting ).

I already thought about deleting all mods, but i spent all day installing more than 30 modifications.
Uninstalling all of them and installing again will take even more ..

Don't you have an idea of what file, template, sql query, anything may cause this bug ? Maybe i can identify the modification causing this problem.

[peterska2]

This is a problem with one of the modifications that you have added, but apart from that it is impossible to narrow it down further.

[Mupetz]

Multiple Login Detector 1.03 Cookie-based multiple account login detector

This may be it.
I will uninstall it and see what happens.
Anyway, if somebody has any other ideas about this please reply.

[Scott MacVicar]

This is a vulnerability in vBSEO, we reported it to the author last week and they've yet to make a release to correct this.

I suggest you enquire at their support system.

[Mupetz]

Thank you so much Scott

[conqsoft]

vBSEO 3.0.0 RC8 has been released to correct this issue: http://www.vbseo.com/f5/vbseo-3-0-re...ailable-10735/